Snatch-block.



F. M. SMITH.

SNATGH BLOCK.

APPLICATION FILED MAR. 2, 1914.

Patented Dec., 29, 1914.

Attqrneys Rb CO., PHOTU-LITHUV. WAS-HINGTON, D. C

. To all whom. it may concern:

FRANCIS M. SMITH, or MAYGER, OREGON. v I

I sNA'rfoH-B'LocK.

Specification of Letters Patent 1 Patented Dec. 29, 1914 Application filed March 2, 1914. Serial No. 821,956.

Be it known that I, FRANCIS M. SMITH, a citizen of the United States, residing at Mayger, in the county of Columbia and State of Oregon, have invented a new and useful Snatch-Block, of which the following is a specification.

The present invention relates to improve ments in snatch blocks, and morev particle larly to the structure shown in myc'o-pending application filed October 13,1913, Serial No. 794,976, one object of thezpresent in vention being the provision of a structure which is an improvement thereupon particularly in that the yoke is cast integral with one member of the snatch block while a novel locln'ng means is carried by the other member for co-action with the fixed bridging element which is also carried by theyoke carried member.

A further object of the present invention is the provision of a snatch block, whereby the members thereof which properly support the pulley or sheave are so disposed as relates to the journal or supporting member of the sheave as to permit the movement of one member with the said journal as its axis so that the respective members may be separated to permit of the introduction or removal of a cable, there being coiiperative locking means carried by the yoke and the adjacent portion of the members to lock such members in cable inclosing position.

With the foregoing and other objectsin View which will appear as the description proceeds, the invention resides in the com.- bination and arrangement of parts and in the details of construction hereinafter de" scribed and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawings Figure 1 is a side elevation of a snatch block made according to and embodying the present invention. Fig. 2 is a longitudinal sectional view therethrough. Fig. 3 is a section taken on the line 3-3 of Fig. 2.

Referring to the drawings, the numeral 1 designates the spindle of the main connecting member of the present snatch block having the reduced threaded end 2,'the reduced plain portion 3 and an oppositely disposed reduced threaded end 4. Surrounding the. enlarged portion thereof-is an antisfrictional' metal bushing 5 which constitutes a bearing for the hub 6 of the pulley or sheave 7. Formed through the member 1 is a central channel or duct 8 which terminates in the radial duct 9 so that lubricant may j be supplied to the pulley or sheave.

The member 11 is provided with a thread-' ed aperture 10 for the reception of the threaded stem 2 and thus is locked fixedly to the member 1. Formed integral with member 11 is a fiat portion 12 which has extending at right angles therefrom at the inner face of the same a connecting bar 13" provided with the T-shaped' head 14., the

upper edge being curved as illustrated in Fig. 3 upon a line concentric to the center of the member 1. The integral yoke 16 is fast to the member 11 and is providedwith the T-shaped depending head17, the purpose of which will presently appear. Formed in the under edge of the head 14 is a recess 15, the purpose of which will presently appear.

The member 18 is constructed with an aperture to surround the cylindrical portion 3 of the member 1 so that such member 18 may be oscillatedrelatively to the member 11, a locln'ng interiorly threaded sleeve 19 being fitted upon the threaded end 4: of the member l and being provided with the threaded plug 20, which constitutes a means for compressing lubricant within'the sleeve 19 and consequently through the ports 8 and 9 to supply the sheave. This sleeve 19 also constitutes a means for locking the parts relatively together as the inner face 1 thereof abuts the shouldered portion of the cylindrical portion 3. and is thus locked provided with a T-shaped in cross sectionslot 22 which opens upon the inner face thereof, as illustrated in Fig. 2, and is disposed to receive the head 14:.of the connecting bar 13,the locking member 23 being disposed to present its semi-circular and reduced end 24 into the recess 15 to lock the parts in the position as shown in Figs. 1 and 2. By this means the member 23 may be rotated a half revolution to place thelocking end 24 out of the recess 15 and thus permit the member 18 to be oscillated to one side so that the head 14 is removed from out of the slot 22. Formed in the extreme upper end of the exthe yoke 16. Thus the parts when assembled, as shown, constitute a means for properly surrounding a :cable upon the sheave or pulley 7 and yet through the manipulation of the locking member the member 18 may be moved to one side so that the connecting bar '13 and the yoke 16 will be disconnected therefrom-to permit of the easy removal or introduction of the cable.

'VVhat is claimed is:

1. A snatch block, including a spindle, a sheave mounted upon the spindle, a frame composed of two separable members, one of said members being fixedly connected to one end of the spindle, while the other of said members is mounted to rotate upon the spindle, a yoke carried by the fixed member, an inwardly projecting bridging member carried by the fixed member, means carried by the swinging member for engaging the yoke, a separate means carried by the swinging member for engaging the bridging member, and a lock carried by the swinging member for engaging the bridging member Copies of this patent may be obtained for to hold the parts against swinging movement.

2. A snatch block, including a spindle, a sheave mounted upon the spindle, a frame composed of tWo separable members, one of said members being fixedly connected to one end of the spindle While the other 01? said members is mounted to rotate upon the spindle, a yoke carried by the fixed member, an inwardly projecting bridging member carried by the fixed member, means carried by the swinging member for enga ing the yoke, a separate means carried by the swinging member for engaging the bridging member, said bridging member being provided with a recess in its end, and a locking pin mounted in the swinging member for movement into and out of the recess.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two Witnesses.

FRANCIS M. SMITH.

Witnesses FRANK A. POMEROY, FRED SEYDELL.

five cents each, by addressing the Commissioner of Patents, Washington, D. G." 

